Dirt-floating device



June 12, 1928.

o. SAALER DIRT FLOATING DEVICE Filed Feb. 28, 192'! Patented June 12, 1928.

UNITED STATES PATENT orrlca.

OTTO SAALER, OF FREIBURG, BREISGAU, GERMANY, ASSIGNOR TO THE FIRM GESELLSCI'IAFT Ell B KAPITALWERTE, OF BADEN; SWITZERLAND.

DIRT-FLOATING DEVICE.

Application filed February 28, 1927, Serial No. 171,681,and in Switzerland March 3, 1926.

This invention relates to a dirt fioating device in connection with the grating arranged in front of the water entrances of for example water-power engines or the like. solid substances from entering the engine are often choked up by the dirt carried by the water and must therefore be cleaned by special cleaning devices. The invention provides means for easily carrying off the dirt removed from the gratings by these cleaning devices.

The drawings show a preferred form of the invention.

Fig. 1 is a cross section of the device,

Fig. 2 a top view according to Fig. 1 and Fig. 3 a front view according to Fig. 1.

In the drawings a is the inclined grating, Z) the bottom of the water canal, 0 the side wall of the canal on the side of the water entrance of the engine and cl the side wall of the canal on the side of the bypass. Furthermore is e the level of the water before entering the main canal leading to the engine, f the level of the water in the main canal and g the bypass separated from main canal e, f by a wall h.

The upper part of the grating carries on the main canal side the floating canal i, which preferably extends with slight inclination over the whole width of the main canal alongthe grating a and runs into the by-pass g. It is preferable to arrange the floating canal '5 in such a manner, that the edge /u nearly corresponds with the level 6 of the water, whereas the bottom Z is below said level 6 and the upper border of the wall on on the side of the main canal f above said level. The bottom Z of the floating canal i may be provided preferably'on the upper end with openings 7 covered with lattice work, through which water from the main canal behind the grating a may enter the floating canal 2'. But the water necessary in the floating canal 2' may also be conducted in any other way for example by conduits, pump or the like. u

The floating canal i may be constructed in any convenient manner for example as a flat U-shaped conduit from sheet-metal, reinforced concrete or the like.

The grating cleaning device which is not shown in the drawing and may be an automatically working comb as shown in my copending application 149,508 is preferably These gratings used for preventing guided in guides solid with the grating a and the floating canalz'.

The working of. the new device is easily understood from the drawings. When the water level a is above the border 70 of the floating canal 27 the impurities floating on the water are entering the floating canal i and conducted into the by-pass g. The impurities not floating on the surface are retained by the grating a and brought over the border is into the floating canal, when clean ing this grating a for example with a comb moving upwards from the bottom of the rake.

l/Vhen the level 0 is below the border It all the impurities of the water are brought into the floating canal 2' by the grating cleaner. In this case the water entering the floating canal 2' from the main canal e by passing the openings 71 is used for carrying the dirt to the bypass 9. As already said above this water necessary for the floating of the dirt may also be conducted to the canal a by other means such as tubes, pumps or the like.

his preferable to arrange in combination with the floating canal 2' and the grating a a bridge 0, witha wall p preventing the water from overflowing the bridge 0 even at a high water level. This wall 79 also secures the floating of the dirt into the by-pass g.

The construction described and shown in the drawing is only an example and may be varied without deviating from the spirit of the invention.

I claim:

1. In a dirt floating device a main canal leading water to the work place, a bypass aside said canal, a grating in front of said main canal and a floating canal along the upper border of said grating falling into said by-pass and inclined towards said bypass. 2. In a dirt'floating device a main canal, a bypass aside said main canal, a grating in front of said main canal, a floating canal along the upper border of said grating falling into and inclined towards said by-pass, and means to conduct water into said floating canal.

3. In a dirt floating device a main canal, a by-pass aside said main canal, a grating in front of said main canal, a floating canal along the upper border of said grating falling into and inclined towards said by-pass, a bottom in said floating canal below the water level and screens insaid bottom communicating said floating canal with said niain canal.

4. In a dirt floating device a main canal, a by-pass aside sai'd main canal, a grating in front of said main canal, a U-shaped' floating anal along the border oi said grating falling into and inclined towards said by pass, means to conduct water into said floating canal and: a wall at the side of said 10 floating canal opposite to the grating, preventing the water from passing the floating canal.

In testimony wl'lereotlaiiix my signature.

OTTO SA A L'ER. 

